The market rate of interest can not directly substitute the social discount rate for its defect on preference revealing, interest forming, the reward of risk, etc.

而市场利率由于在偏好揭示、利率形成、风险报酬等方面的缺陷，又不能直接替代社会贴现率。

youdao

Social data is not a perfect measure by any means, but it does do a surprisingly effective job of revealing mass preference.

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